CN213980622U

CN213980622U - Shock absorption mechanism

Info

Publication number: CN213980622U
Application number: CN202023319647.0U
Authority: CN
Inventors: 王云辰; 刘其宁; 朱伟
Original assignee: Wuxi Anman Construction Machinery Co ltd
Current assignee: Wuxi Anman Construction Machinery Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-17
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a bradyseism mechanism, nested in the first base has first copper sheathing, and the front portion of first copper sheathing is minor diameter portion, rear portion for major diameter portion, has radial first step face between minor diameter portion and major diameter portion, is provided with the elastic component between first step face and the first base medial surface, and the elastic component cover is established in the path portion periphery of first elastic component. The utility model discloses when not only including the soil layer but also including the construction in the complicated stratum of rock layer, according to the actual conditions at construction position, can directly independently open gyration or impact, also can open gyration and impact simultaneously, and need not change the unit head of different grade type, saved the time that the unit head dismouting was changed, improved the efficiency of construction for the construction progress has shortened construction period.

Description

Shock absorption mechanism

Technical Field

The utility model belongs to the technical field of drilling equipment technique and specifically relates to a bradyseism mechanism.

Background

The drilling machine is widely applied to the fields of exploration or mineral resource development, geotechnical engineering construction, geotechnical foundation construction and the like, different construction processes can be adopted according to different stratum conditions in the construction process of the drilling machine, and the different construction processes are realized by different types of power heads, for example, a gyrator power head is adopted to drive a drilling tool to drill a hole in a stratum, and an impactor power head is adopted to impact and crush a rock. However, the conventional power head is generally single in functionality, for example, the rotary power head can only drill holes for drilling common soil layers and has almost no effect on impact on rocks, while the impactor power head can only impact the rocks but cannot rotate; under the condition of meeting a complex stratum (a soil layer and a rock layer exist), different types of power heads are usually replaced for construction, longer time is consumed for the disassembly, the assembly and the replacement of the power heads, the construction efficiency is reduced, the construction progress is slowed down, and the construction period is prolonged.

SUMMERY OF THE UTILITY MODEL

The applicant aims at the defects that in the construction process of the existing drilling machine, different power heads need to be replaced by different construction processes, the construction efficiency is reduced, the construction progress is slowed down, the construction period is prolonged and the like, and provides the cushioning mechanism with a reasonable structure.

The utility model discloses the technical scheme who adopts as follows:

a first copper sleeve is nested in a first base, the front portion of the first copper sleeve is a small-diameter portion, the rear portion of the first copper sleeve is a large-diameter portion, a radial first step surface is arranged between the small-diameter portion and the large-diameter portion, an elastic piece is arranged between the first step surface and the inner side face of the first base, and the elastic piece is sleeved on the periphery of the small-diameter portion of the first elastic piece.

As a further improvement of the above technical solution:

the inner circumferential surface of the first base corresponding to the large diameter part of the first copper sleeve is provided with a plurality of first grooves, the outer circumferential surface of the large diameter part of the first copper sleeve is provided with a plurality of second grooves, and pins are arranged in the first grooves and the second grooves.

The inner circumferential surface of the small diameter part of the first copper sleeve is provided with a first spiral groove, and the small diameter part is provided with a first through hole communicated with the first spiral groove along the radial direction.

An oil cup is arranged on the first base corresponding to the first through hole.

An oil seal is arranged on the inner periphery of the front end part of the small-diameter part of the first copper sleeve.

The front end of the first copper sleeve penetrates through the first base, and a gasket is arranged outside the rear end of the first copper sleeve for limiting.

The utility model has the advantages as follows:

the utility model can drive the drill bit shank to do rotary motion through the rotary mechanism by the driving mechanism, carry out drilling construction on the stratum through the drilling tool, and provide impact power for the drill bit shank by the impact mechanism to impact the stratum, wherein the rotary and impact can be independently opened or simultaneously opened; when the construction is carried out in the complex stratum which comprises the soil layer and the rock layer, the rotation or the impact can be directly and independently opened according to the actual condition of the construction part, the rotation and the impact can also be simultaneously opened, the power heads of different types do not need to be replaced, the time for disassembling, assembling and replacing the power heads is saved, the construction efficiency is improved, the construction progress is accelerated, and the construction period is shortened.

The utility model discloses a partly impact force that produces when the elastic component can absorb impact mechanism and strike prevents that the impact force is too big and make whole unit head receive the damage.

Drawings

Fig. 1 is a perspective view of the power head of the present invention.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a left side view of the present invention.

Fig. 4 is a sectional view taken along line B-B of fig. 3.

Fig. 5 is a sectional view of the swing mechanism with the rear cover removed.

In the figure: 1. a drill shank; 11. inserting holes;

2. a medium introducing mechanism; 21. a barrel; 22. a media chamber; 23. a media input port;

3. a cushioning mechanism; 31. a first base; 311. a first groove; 32. a first copper bush; 321. a first step surface; 322. a first helical groove; 323. a first through hole; 324. a second groove; 33. oil sealing; 34. an elastic member; 35. an oil cup; 36. a gasket; 37. a pin;

4. a swing mechanism; 41. a second base; 42. a front cover; 43. a rear cover; 44. a first gear; 441. a second step surface; 442. a second helical groove; 443. a second through hole; 45. a second gear; 46. A second copper sleeve; 47. an anti-collision member;

5. a drive mechanism;

6. an impact mechanism; 61. a mandrel; 62. a front cylinder body; 63. a rear cylinder body; 64. a reversing valve assembly;

7. a connecting rod assembly.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 and 2, a slewing mechanism 4 is sleeved on the rear part of a drill shank 1 of the power head, the slewing mechanism 4 is connected with a driving mechanism 5, a cushioning mechanism 3 is fixed at the front end of the slewing mechanism 4, the cushioning mechanism 3 is sleeved on the middle part of the drill shank 1, and an impact mechanism 6 is fixed at the rear end of the slewing mechanism 4; the middle part of the drill bit shank 1, the front side of the cushioning mechanism 3 and a certain distance away from the cushioning mechanism 3 are sleeved with a medium leading-in mechanism 2, and the medium leading-in mechanism 2 is connected with the cushioning mechanism 3 through a connecting rod component 7; the center of the front part of the drill shank 1 is provided with an inserting hole 11 along the axial direction for inserting a drilling tool.

As shown in fig. 2, a cylinder 21 of the medium introducing mechanism 2 is sleeved in the middle of the shank 1, a medium cavity 22 is formed in the center of the cylinder 21, a medium inlet 23 communicated with the medium cavity 22 is radially formed in the cylinder 21, and a plurality of sealing elements are respectively arranged in the cylinder 21 and positioned at two sides of the medium cavity 22 to seal the medium cavity 22; the medium chamber 22 communicates with the insertion opening 11 of the shank adapter 1. The medium (water or high-pressure gas) is input into the medium cavity 22 through the medium input port 23 and then input into the insertion hole 11 of the drill shank 1 from the medium cavity 22, so that the drilling slag at the bottom of the drill hole can be conveniently discharged, and the drilling efficiency is improved.

As shown in fig. 3 and 4, a first copper sleeve 32 is nested in the first base 31 of the cushioning mechanism 3, the front end of the first copper sleeve 32 penetrates through the first base 31, and a gasket 36 is arranged outside the rear end of the first copper sleeve for limiting. The front and rear parts of the first copper bush 32 have different outer diameters, the front part is a small diameter part, the rear part is a large diameter part, and a radial first step surface 321 is arranged between the small diameter part and the large diameter part; a first spiral groove 322 is formed in the inner circumferential surface of the small diameter portion of the first copper bush 32, a first through hole 323 communicated with the first spiral groove 322 is formed in the small diameter portion in the radial direction, the first spiral groove 322 and the first through hole 323 form a lubricating oil channel, an oil cup 35 is arranged on the first base 31 corresponding to the first through hole 323, and the oil cup 35 supplies lubricating oil to the first spiral groove 322 through the first through hole 323 to lubricate the matching portion of the first copper bush 32 and the drill shank 1; an oil seal 33 is provided on the inner periphery of the front end of the small diameter portion to seal. An elastic part 34 is arranged between the first step surface 321 of the first copper bush 32 and the inner side surface of the first base 31, and the elastic part 34 is sleeved on the periphery of the small diameter part of the first elastic part 34; the elastic member 34 can absorb a part of the impact force generated by the impact mechanism 6 during impact, so as to prevent the whole power head from being damaged due to the excessive impact force. The inner circumferential surface of the first base 31 corresponding to the large diameter portion of the first copper sleeve 32 is provided with a plurality of first grooves 311, the outer circumferential surface of the large diameter portion of the first copper sleeve 32 is correspondingly provided with a plurality of second grooves 324, and pins 37 are arranged in the first grooves 311 and the second grooves 324 to circumferentially limit the first base 31 and the first copper sleeve 32, so that the first base 31 and the first copper sleeve 32 are prevented from rotating.

As shown in fig. 5, the front cover 42 and the rear cover 43 are respectively and fixedly disposed on the front and rear end surfaces of the second base 41 of the swing mechanism 4, a first gear 44 and a second gear 45 are disposed in the second base 41, and the outer periphery of the first gear 44 is engaged with the second gear 45 through gear teeth; the center of the first gear 44 is a stepped through hole with a large front part and a small rear part, the front part of the stepped through hole is a large-diameter hole part, the rear part of the stepped through hole is a small-diameter hole part, and a radial second stepped surface 441 is arranged between the large-diameter hole part and the small-diameter hole part; the circumferential surface of the small-diameter hole portion of the first gear 44 is provided with a second spiral groove 442, the first gear 44 is provided with a second through hole 443 communicated with the second spiral groove 442 in the radial direction, the second spiral groove 442 and the second through hole 443 form a lubricating oil passage, and lubricating oil can be supplied to the matching portion of the first gear 44 and the drill shank 1 through the lubricating oil passage for lubrication. A second copper sleeve 46 is arranged in the large-diameter hole part of the first gear 44 through key tooth meshing, and an anti-collision piece 47 is arranged between the inner end surface of the second copper sleeve 46 and the second step surface 441 to prevent the drill shank 1 and the second copper sleeve 46 from directly colliding with the first gear 44 during axial movement and avoid directly damaging the first gear 44; as shown in fig. 2, the second copper sleeve 46 is sleeved on the periphery of the drill shank 1 through key tooth meshing, the second gear 45 is connected with the driving mechanism 5 (not shown in the figure), and the driving mechanism 5 sequentially passes through the second gear 45, the first gear 44, the second copper sleeve 46 and the drill shank 1 to transmit torque, so as to drive the drill shank 1 to rotate.

As shown in FIG. 2, a front cylinder block 62 of the impact mechanism 6 is fixed on a rear cover 43 of the swing mechanism 4 through a fastener, a rear cylinder block 63 is sleeved at the rear end of the front cylinder block 62, the mandrel 61 is inserted into central channels of the front cylinder block 62 and the rear cylinder block 63, a reversing valve assembly 64 is arranged on the front cylinder block 62, the reversing valve assembly 64 is a hydraulic reversing valve and is communicated with the central channel of the front cylinder block 62 through corresponding channels, and the mandrel 61 is driven by hydraulic oil to impact back and forth in a circulating manner to provide impact power for the drill shank 1.

The drive mechanism 5 is a hydraulic motor.

During actual use, the rotary mechanism can be directly and independently opened for rotation or impact or can be simultaneously opened for rotation and impact to construct the stratum according to the actual condition of the stratum construction part.

The utility model can drive the drill rod shank 1 to do rotary motion through the rotary mechanism 4 by the driving mechanism 5, carry out drilling construction on the stratum through the drilling tool, and also can provide impact power for the drill rod shank 1 by the impact mechanism 6 to impact the stratum, and the rotation and the impact can be respectively and independently opened, and also can be simultaneously opened; when the construction is carried out in the complex stratum which comprises the soil layer and the rock layer, the rotation or the impact can be directly and independently opened according to the actual condition of the construction part, the rotation and the impact can also be simultaneously opened, the power heads of different types do not need to be replaced, the time for disassembling, assembling and replacing the power heads is saved, the construction efficiency is improved, the construction progress is accelerated, and the construction period is shortened.

The above description is illustrative of the present invention and is not intended to limit the present invention, and the present invention may be modified in any manner without departing from the spirit of the present invention.

Claims

1. A bradyseism mechanism which is characterized in that: a first copper sleeve (32) is nested in the first base (31), the front portion of the first copper sleeve (32) is a small-diameter portion, the rear portion of the first copper sleeve is a large-diameter portion, a radial first step surface (321) is arranged between the small-diameter portion and the large-diameter portion, an elastic piece (34) is arranged between the first step surface (321) and the inner side surface of the first base (31), and the periphery of the small-diameter portion of the first elastic piece (34) is sleeved with the elastic piece (34).

2. A cushioning mechanism according to claim 1, wherein: the inner circumferential surface of the first base (31) corresponding to the large-diameter part of the first copper sleeve (32) is provided with a plurality of first grooves (311), the outer circumferential surface of the large-diameter part of the first copper sleeve (32) is correspondingly provided with a plurality of second grooves (324), and pins (37) are arranged in the first grooves (311) and the second grooves (324).

3. A cushioning mechanism according to claim 1, wherein: the inner circumferential surface of the small-diameter part of the first copper sleeve (32) is provided with a first spiral groove (322), and the small-diameter part is provided with a first through hole (323) communicated with the first spiral groove (322) along the radial direction.

4. A cushioning mechanism according to claim 3, wherein: an oil cup (35) is arranged on the first base (31) corresponding to the first through hole (323).

5. A cushioning mechanism according to claim 1, wherein: an oil seal (33) is provided on the inner periphery of the front end of the small diameter portion of the first copper bush (32).

6. A cushioning mechanism according to claim 1, wherein: the front end of the first copper sleeve (32) penetrates through the first base (31), and a gasket (36) is arranged outside the rear end of the first copper sleeve for limiting.